TLD environmental monitoring of new scanner facilities at the Nuclear Medicine Department of the Taiwan Medical University Hospital
| Autor: | Yingyi Le, Yueh-Chun Lee, Chien-Yi Chen, Pan-Fu Kao, Jui-Hung Weng, Lung-Kwang Pan, Tsung-Min Lee |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Scanner
Single Photon Emission Computed Tomography Computed Tomography Thermoluminescence dosimeter Biomedical Engineering Biophysics Taiwan Health Informatics Bioengineering Nuclear Medicine Department Radiation Dosage Biomaterials Hospitals University Environmental radiation rates Absorptiometry Photon minimum detectable dose Occupational Exposure Environmental monitoring Medicine Humans DXA medicine.diagnostic_test Dual energy business.industry thermoluminescence dosimeter Radiation Exposure University hospital Occupational dose Gamma Rays SPECT Thermoluminescent dosimeter Nuclear Medicine business Nuclear medicine Emission computed tomography Information Systems Research Article |
| Zdroj: | Technology and Health Care |
| ISSN: | 1878-7401 0928-7329 |
| Popis: | OBJECTIVE: Single-photon emission computed tomography (SPECT) as well as dual energy X-ray absorptiometry (DXA) scanners were designed in July 2018 at the Nuclear Medicine Department (NM), of the Taiwan Medical University Hospital. These scanners emit substantial X-rays from the target, which are tungsten, iron. Therefore, patients undergoing SPECT and DXA diagnosis, in addition to medical personnel, are exposed to undesirable photon leakage. METHODS: Following administration of radiopharmaceuticals, patients become radioactive sources; thus, it is necessary to evaluate a possible increase in the environmental gamma exposure rates in the NM as a result of the operation of the new scanners. A three month evaluation of environmental radiation in the NM was performed using the accurate and sensitive TLD-100H approach, which gives an error rate less than 10%. RESULTS: Detected exposure radiation rates in the NM ranged from 0.12 ± 0.02 to 1.00 ± 0.15 mSv per month, indicating that the imaging room had significantly different radiation rates. The results were compared with previous results, and no significant contribution to the enhancement of environmental gamma radiation was detected, which remained far below the occupational dose recommended by ICRP 60. The minimum detectable dose (MDD) for environmental radiation is also discussed herein to demonstrate the reliability of TLD-100H. CONCLUSION: Recommendations were sent to the authorities of AEC-ROC to implement actions that could reduce doses at these high-dose locations to meet the ALARA principle. |
| Databáze: | OpenAIRE |
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